Big metal mesh surface with Four silent fan diameter 14 cm with Blue LED Lights,Make the heat dissipation perfect. special air flow outlet design,keeping your notebook cool during use,and can be worked on desk or on bed Slim, light weight, allowing you to store it in your laptop Bag and take it with you whenever you go 2 USB ports for Laptop Cooling Pad can connect more USB devices. One is connected to the laptop for power supply. The other connects additional USB devices, such as USB flash drives, keyboards, etc. fashion and unique design,comfortable feeling,hold you and your notebook in an safe and comfortable situation Item model number: S400 Voltage: 5V Current: 0.4A Power: 8.W Number of fans: 4PCS Fan size: 14CM Fan speed: 1000±10%RPM Colour:black Material:Metal, plastic Size:40.8 x 30.3 x 3.1CM Package Contents: 1 x Laptop Cooling Pad 1 x USB cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.